void apple;
int coconut[];
int my_str[] = "hello";
char my_str2[4] = "hello";
int banana[2] = {1, 2, 3};
int x = 10;
int *px;
char *my_str = "hello";
int a1 = 99, a2 = 98, a3[3]={13, 14};
char *arr[] = {"haohao", "xuexi"};

int bar;

int bar(int a, int b, int c); // 会报错
int bar(int a, int b, int c)  // 会报错
{
    
}
